True or False: All hairs are never in the same phase at the same time.

The statement that all hairs are never in the same phase at the same time is true. This relates to the hair growth cycle, which consists of three main phases: anagen (growth phase), catagen (transitional phase), and telogen (resting phase). Each hair follicle operates independently, meaning that at any given moment, some hairs will be in the anagen phase while others are in catagen or telogen. This staggered developmental cycle ensures that hair is continuously shed and regrown over time, contributing to the natural appearance of human hair. Because of this independent cycling of hair phases, it is accurate to say that all hairs are never synchronized in the same growth phase simultaneously.